Subtract 3/90 from 20/84
20/84 - 3/90 is 43/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
20/84 = 20 × 15/84 × 15 = 300/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
3/90 = 3 × 14/90 × 14 = 42/1260 - Subtract the two like fractions:
300/1260 - 42/1260 = 300 - 42/1260 = 258/1260 - After reducing the fraction, the answer is 43/210
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